Jordan plug jacket



y 1952 o. E. LARSON JORDAN PLUG JACKET 2 SHEETS-SHEET 1 Filed Jan. 23, 1946 INVENIDE M z: 9%

July 1, 1952 o. E. LARSON JORDAN PLUG JACKET 2 SHEETS-SHEET 2 Filed Jan. 25, 1946 EEER BY 4 Z: INVENTOR Patented July 1, 1952 JORDAN PLUG JACKET Oscar E. Larson, Andover, Mass., assignor to John W. Bolton & Sons, Inc., Lawrence, Mass, a corporation of Massachusetts 7 Application January 23, 1946, Serial No. 642,918

11 Claims.

This invention relates to what are known as the linings for Jordan engines. It has particular reference to the outside linings or jackets of the type which can be slipped on a frustro-conical Jordan plug but many of its features are suitable for the inside lining for a Jordan shell.

The cutting members known as knives generally used in a shell lining are bent although in somecases straight knives or cutting members are used, while ordinarily the bars or cutting members used on the outside of a Jordan plug are straight.

Linings or jackets for Jordan plugs have been cast of, a single metal and have been made by stringing the bars onfrods or wires which pass through holes, the spaces between the bars bein filled with wood orsome sort of plastic but there are objections to the cast jackets and also to the wire strung jackets. The stretching of the metal wire is a factor which causes great difficulty and often loosens parts of the jacket causing smashes.

Instead of the wire near the inside, I use a series of disks with cut out portions in which the bars rest thus providing not only greater strength near the outside to resist sideways shock but more metal to resist such stretching of the wire. Thesedisks may be used over and over as they are not easily distorted nor damaged and they do not wear out as rapidly as the bars.

If a plastic is used between the bars or even if wooden separators are used, when a bar hits a metal obstacle or obstruction such as are sometimes encountered, itbends over and distorts the separating means to an objectionable extent.

In this invention, I use a plurality of parallel annular metal disks, each with a plurality of radial outside bar cut outs extending inward and with aligned inside bar or tongue cut outs extending outward with the connecting metal' of the disk between them. I provide each bar with a plurality of inside L shaped recesses which form tongues, the bar holdingor connecting part of the disk between an inside and an outside cut out fitting into the recessed part of a. bar, the tongue extending under it .and thereby being locked against radially outward movement.

If this connecting part of a disk fits into the arm of a recess in a. bar with a close'fit or. if the inner and outerlfaces of 'such arm converge so that there is a'wedging action, the whole assembly is built up and locked together without the necessity of welding or riveting. Such a structure can be used in some cases with no filling in the pockets formed between the disks and the bars, but preferablythese pockets are filled with 2 wood or plastic at least part way up to the outer rims of the disks. The pockets may however be filled up to the outer edges of the bars.

As part of the preferred type of my plug jacket, I provide two or more, preferably 4, 6, or 8, extra deep bars of such a depth that they project inwardly beyond the inner edges of the rest of the bars and I provide a plug with slots corresponding in number, size and position to these inwardly projecting deep bars so that, as shown and described to a certain extent in patent to Schueler, No. 2,336,039, the complete jacket or lining can be slipped on a plug having a number of slots corresponding with the number of inwardly projecting deep bars whereby the whole jacket is prevented from turning on the plug and these inwardly projecting bars also act as locks to counteract centrifugal force.

With this disk construction, there is a much greater amount of holding metal extending radially outward in the disks than where there are merely wire rods or bands to hold the bars and separators against centrifugal force, the outside cut outs in the disks also prevent the bars from tipping over circumferentially when an obstacle is encountered and the metal between the inside and outside cut outs keeps each disk perpendicular to the axis of the assembly.

The bars and disks may be forced together so that the combination is rigid and in this condition it can be used in some cases without any separators. Moreover, if one or more bars are bent or otherwise injured, such bar or bars can be driven out and can be replaced by a :new bar or bars. The life of the unit is therefore prolonged.

In the drawings, Fig. l is an isometric. view of one type of Jordan engine plug with a lining or jacket of my construction shown as slipped part way onto it.

Fig. 2 is an enlarged view as from the large end of a plug and lining such as shown in Fig. 1, partly broken away to show the construction.

Fig. 3 is an elevational view of a disk such as used in the construction shown in all of the views and Fig. 4 is a side elevation on a small scale showing a typical plug bar or cutting member of the type such as shown in substantially all of the with adisk for supporting it, the relation between 3 the holding part of the disk and the bar being of the preferred type.

Figs. 7 and 3 are views on planes which extend at right angles to the axis of the lining and pass through holes in a bar.

Figs. 9, 1O, 11 and 12 are views similar to Fig. 6, showing diagrammatically other modifications of the tongues on the bars and of their relation to the holding part of disks.

Fig. 13 is a detail of larger size than Fig. 8, showing certain bars and disks with precut separaters.

Fig. 14 is a view similar to Fig. 13 but showing a somewhat diiferent arrangement of bars'and disks.

Fig. 15 is a longitudinal view along the face of a precut wooden separator'fastened in place in a particular way.

In the drawings, L represents the complete lining or jacket for a Jordan engine plug P ar'oun'd'the outside surface of which are a plu- 'rality of bar holding slots 50, 28. As shown, there are eight slots marked it! to receive eight :bars'C, which are I somewhat deeper than the others markedB tohold the assembly together and'to prevent the lining from turning.

represents the shaft which carries plug'P.

D, D represe'nt annular disks 'e'a'ch preferably made of metal, each with parallel faces I3 and I4 and-each'with an outside rim I6 and an'inside im g l- 7 -Extending radially inwardfrom its outside rim I6 are-a plurality of outside radial bar cut outs I2 which extend radially inward and fromthe 'insi'de'rim I'I, the inside radial barcutouts 'II extend radially outward each in line with an outside bar cut out I2. Between the inside and outside radial cut outs-there is a'bar holding -portion- I5. I

--I "use-a: plurality of substantiallystraight bars represented} generally by B andby C eachpositioned partly in an aligned outside disk cut out I2 and eaclrhaving a tongueB extending down inside'the disk tongue holding portion- I5 and *irito-the'inside cut out I I.

"Each bar as shown hasa reduced tip-orshoulder 64 at one end and -a'slot-65 at the otherend. -Aring-63 around tips .64 and-a ring 62 seated in slots-6,5'-help* to steady the ends of the bars but they are not absolutely necessary.

These tongues 6 are formedby L-shaped recesses-5 which extend from the inside edge I-of '"eachbar, at a slightly obtuse angle at 20 and thenceat 2| in a direction substantially at a right angle and at a slight angle with the inside edge I and outside edge 2 of each bar to form arongue such-as-G.

Preferably the outside edge'2I of each L=shaped slot S'i'snot parallel with the outside edge Zof its bar but is parallel with the axis of the plug to"wl iich it is to be attached and the outside'edge -22-or the holding portion I5 of eachdisk is also preferably parallel-with-thesaid axis so-that in assembling the bars and-disks for a lining L on a form-correspondingwith the plug to which it is "to be attached, when each bar is forced or driven in from the small endsothat its tongue 6 canextendunder the inside e'dge23 of a holding part I5, there will be no tendency to pull the bar inwardtowards the axis of the plug although as 'shown'in Fig. 9 such a construction can be-used in some cases. 7 V The inside edge 23 of the holdingpart I5 is also prefer-ably parallel with or at a tangent to "a'cyliiider, the center of which is the plug "axis as "This will- 4 V and the outside edge 25 of each tongue 6 is parallel With the inside edge 23 of the cut out so that when entirely seated as shown in Fig. 6, there is a drive or forced fit between these parts where- 5 by any radial movement, either outward or inward, by the bars is prevented.

The arm of the L-shaped recess as shown exaggerated-'at liffiig. 10, can taper 'so that the holding part I5 will be wedged in place.

l0 -As shown in Fig. '7 however, if a plastic material A is introduced into the pockets between ad- -jacentdisks and adjacent bars and the outside face I9 of the plug, I can provide recesses or holdinghol'a'l in the sides of or through the is bars B-o r o into which this material A will be forced as at 8 whereby when it hardens, it will hold the sep'aratingmaterial A in place and will also lock'the disks D and bars B and C in place.

In the same way, as shown in Figs. 13, 14,

where wood W or a similar precut material for Fig'f's.

The tongues Go'f the'bars C are of {the same construction as of the'bars B except thatas these bars are of a greater depth, their tongues will be alittle deeper to enter"s1ots-'40 but their outer edges will be 'the'same.

Thetrapezium shape oi'thes'eparators or separating material combined with the locking by nails N, or'hol'es SI or 1 and the stock-'5 I orBwill hold thestrii'cture to'gether'eveniflas shown in Fig. 12,1there'is not a'tig'ht 'fit between'a tongue 0 and holding portion I5 of a disk.

The extra 'deenbars 0 not only prevent the lining -L;frorn turning but,- on the same principle explained'in patent to. Schueler, No. 2,336,039,

"40 they-Will also help-'to "hol'd'the' lining against radial displacement.

As shown in Fig. 11, the part 26 at the outside edge of the tip :21 ofeach't'ongue 6 may be at an angle so as to assist in seating 'the holding 4.3 part-of each tongue and the connecting or holding part 4 I 5 of-adisk -to register.

It will-be notedthat the'bars as shown'are to bedri-ven infrom the small end of thelpl'ug, the tips--of--the-tongues therefore being directed to towards the large endand it will be 'noted that the disks D, D, are-in a 'planeper'pendicular .to "the axis of the .-plug -while -'the direction of the b'ars Brand C are at an angle therewith.

I may take advantage: of --thiscondition where *as in "some cases, we wish to use preformed or precu't'separators such as shown at Win Fig.115, .which h'ave a relatively -narrow inside face "30, outside -face 3-I ,-inwa'rdly converging side faces 32 and 'ends 34 -and 35--both of 'whicheonformto so the "angle between a disk' and the outer-surface I9 or a pIug-WherebY-if a nail such asN'is driven throughza disk into the end fl that end will be 'lield fi om sprihgingout and the other end :35 will b'e held in a' sort of a wedge shaped socket.

ck the -barssand disks in place. As she each of thesewooden separators' has 'a part which extends at 136 =an'd 3l over the out- -side 6f the 'out'er rim-ta ot adisk.

is s'hown- -in Fig- 14, this lining or .jacket L indicatedby 'fi lbrin any otnr waw I find it convenient in assembling a jacket such as L on a suitable form, to put the disks such as side between adjoining disks and there being two D in place and then to drive the bars such as l of the bars at the small end. A ring 62 at the large end can then be attached so as to stiffen the assembly of disks and bars. The wooden separators or preformed separators such as W can be put in place and held as by nails N or plastic material such as A can be poured or trowelled into the pockets between the bars and disks.

In some cases however, the rings 62 and .63 and the separating material can be entirely omitted as an assembly of disks and bars with or Without rings 62 and 63 can be put together and will hold to ether if there is a perfect fit between the arms of the L-shaped recesses in the bars and the holding parts of the disks as'shown in Figs. 6 and 9 or if they are wedged together as shown in Fig. 10.

Fig. 6 shows a smooth accurate joint between the L-shaped recesses and this holding part [5.

Fig. 9 shows an accurate joint between the faces 21 and 22 and between and 23 along Part of their faces, a part of the face 25 being slightly bevelled to help in seating.

In Fig. 11, the same construction is shown, there being a close accurate fitting joint between 2| and 22 and between 25 and 23.

In Fig. 10, as described, there is a distinct wedging action although of course the extent of the slopes is exaggerated in the drawing, while in Fig. 12 a clearance is shown between the faces 2| and 22 but a close joint between 25 and 23. With such a construction, separating members of some type, either preformed or plastic, are highly desirable, if not necessary, to hold the structure firmly together.

By disk, I mean a flat metal member Which is of substantially greater diameter, namely in a radial direction from the axis of the plug, than its thickness, which would be the distancebetween its fiat faces as measured in an axial direction. This word disk or the .word disks is clearly intended to distinguish from a band or a hoop, each of which is of greater width as measured in the direction of the plugs length, than its thickness as measured in a radial direction from the plug's axis and also to distinguish from an annular rod or wire of circular cross section,

I claim:

1. The combination in a bodily transportable hollow truncated conical lining for a Jordan engine plug; of a plurality of annular disks of different diameters, each positioned in a plane perpendicular to the axis of the lining, each disk having a plurality of outside radial bar cut outs extending radially inward from its outer rim and inside radial bar cut outs extending radially outward from its inner rim, each in line with an outside bar cut out, there being a bar holding portion between the cut cuts; with a plurality of substantially straight bars each positioned in aligned outside disk cut outs and extending outward beyond the outside rims of the disks, each bar having a plurality of L-shaped recesses forming tongues extending from its inside edge, each tongue extending through an inside out out in a disk with the disk bar holding portion entering a bar tongue recess and engaging a tongue, each bar having a filling holding recess positioned in its or more holding bars the inside edges of which extend radially inward beyond the inside edges of the other bars to enter slots in a Jordan plug; and filling positioned in the pockets formed by adjacent bars and disks, the filling entering the side filling holding recesses in the bars.

2.- The combination in a bodily transportable hollow truncated conical lining for a Jordan engine plug; of a plurality of annular disks of different diameters, each positioned in a plane per- -pendicular to the axis of the lining, each disk yond the outside rims of the disks, each bar having a plurality of L-shaped recesses forming tongues extending from its inside edge, each tongue extending through and engaging an inside cut out in a disk with the disk bar holding portion entering a bar tongue recess and engaging the top and bottom faces of the recess, each bar having a filling holding recess positioned in its side between adjoining disks and filling positioned in the pockets formed by adjacent bars and disks, the filling entering the side filling holding recesses in the bars.

3. The combination in a bodily transportable hollow truncated conical lining for a Jordan engine plug; of a plurality of annular disks of different diameters, each positioned in a plane perpendicular to the axis of the lining, each disk having a plurality of outside radial bar cut outs extending radially inward from its outer rim and inside radial bar cut outs extending radially outward from its inner rim, each in line with an outside bar out out, there being a bar holding portion between the cut outs; with a plurality of substantially straight bars each positioned in aligned outside disk cut outs and extending outward, each bar having a plurality of L-shaped recesses forming tongues extending from its inside edge, each tongue extending through an inside out out in a disk with the disk bar holding portion entering a bar tongue recess and engaging a tongue, and there being two or more holding bars the inside edges of which extend radially inward beyond the inside edges of the other bars to enter slots in a Jordan plug.

4. The combination in a bodily transportable hollow truncated conical lining for a Jordan engine plug; of a plurality of annular disks of different diameters, each positioned in a plane perpendicular to the axis of the lining, each disk having a plurality of outside radial bar cut outs extending radially inward from its outer rim and inside radial bar cut outs extending radially outward from its inner rim, each in line with an outside bar cut out, there being a bar holding portion between the cut outs; with a plurality of substantially straight bars each positioned in aligned outside disk cut outs and extending outward, each bar having a plurality of L-shaped recesses forming tongues extending from its inside edge, each tongue extending through an inside cut out in a disk with the disk bar holding portion entering a bar tongue recess and engaging a tongue.

5; The combination in a bodily transportable hollow truncated conical lining for a Jordan enf .gine plug; of aplurality ofannulandisks ofidifferent diameters,: each positioned ,in a..-1:plane perpendicular to the axis ofJthe-liningr each.;' disk havinga plurality of :outside:radial{baricutouts extending radially inwardirom its outergrim and inside radial bar .cut outs;extendingiradially tout- Ward from its-inner;.rim-;. each in'zlineiiwith a .outside :bar cut out; there bein lxa bar; holding ,portion betweenthe cutiouts;.1with-;azplurality of a substantially straight'rbars each epositionedriiwith a close fit in aligned outside; diskacutnutsand tending outward-.beyondthe :outsid e;rims ofilthe disks, eachbar havinga plurality ofzLrshaDed re- .cesses forming;tongues1e tnd ngai m itslinsi 1 Hedge, each tongue'extendinggthroughz antmSid cut-out in a disk cwithirthe -disk bareholdingrportion. entering a: bar-tongue. recess ancieen a in the topiand bottomiaces ototheirecesslwith a drive 7 fit, each-bar. having. a filling, holdingrrecess positioned in itsisidejbetween adioiningdisksand -there being two or; mor e.iholding;barsithezinside :edges of which extend radially,;;inward;;beyond the "inside edges of the':.oth er,,:bars to ;enter, slots in a Jordanplug; and filling. positioned inJthe I pockets formed by. adjacent :bars;.and ;:disks.athe 1 filling entering :rthe; side: fillingliholding. .recesses in the bars.

6. The combination in atbodilygtransportable hollow truncatedeonical :liningnfor a.: .Jordan enginelplug: of aflplurality of annular,;;disks of different zdiameters ...each,= positioned in a;;plane perpendicular to the-aaxis of"the;liningneachedisk having a plurality .of outsideiradial bancut outs extending radially inwardfrom; its, outerarirn and inside radiahbarcutiou-ts extending radially outward from its inner :rim, each inlinegudth an outside bar cut';.o ut,.=there ibeing a- -ba-r."holding portion between .y-the.:cut.::outs;;;with ,agplurality of substantially straightflbars-neach ;.pos.itiozied with a close fit inalignedioutsid'eldisk,zcut'iouts and extending outward beyond ltheloutsidenrims enter. ing aabar faces of the-reeessesrwitha;drive fi eachabar having aqfilling holding-;-recess posit ned in its side betweenadjoiningdiskgnnd; positioned lIlrtllQfPOCkfiiSQfOJ-mGflf a:

, barsand disks, theafillingrentering:the,sidegfilling la stic fi-lling .acent holdingrecesses in thee-bars.

7. The combination in a bodilystransportable hollow truncated v sconical. liningvfor a Jordan engine plug; of a plurality of -annulardisks of "difierent diameters, U each. positioned in'a' plane perpendicular to the axis of thelining-geach vdisk having a plurality 'of-outsideradial -bar cut outs extending radiallyiiiward -ironr its outer rim and inside-radial -bar *cutoutsextending radially outward from its 'inner'rirm-each in line Y with an outside barcut-out; there ,beinga bar holding portion between the-cut",*outsgwvith a plurality oiysubstantially straight bars, each positioned with a close fit inalignedfontside disk out outs andiextending'outward,each barhaving a plurality of Lashaped recesses iormingtgngues extending from. its, inside .Qd .each, tongue extending through an insidercutnut in,a..disk with the disk bar holdingw portionnentering a bar tongue recess and engaging a tonguewith adrive fit, andthere being two. or more holding bars .r the inside'edges of which'extend. radially: inward perpendicular to theaxis of the lining-each disk .;;having-a-. plurality ofoutside radial barcut outs wvextending-radially inward from its outer rim l-andinside radial bar cut outs extending radially outward-from its inner=rim, each in linewith an outside bar cutout, there being a bar holding ,qportion between the cut outs; with a plurality ofwsubstantially straight bars each positioned with a close fit in=aligned outside disk cut outs mwandextending outward, each bar having a plurality of l.-shaped recesses forming tongues eX- tendingfrom itsinside. edge, each tongueextendo ing through an inside out out in a disk with the ,.=disk,.bar, holding portion entering a bar tongue ,recessrand engaging a tongue with a drive fit. 9.,The combination in a bodily transportable hollow truncated conical lining for a Jordan henginelplugpof aplurality of annulardisks of 5 different diameters,, each positioned in a plane perpendicular to the ,axis of the lining, each disk having a plurality of outsideradial bar cutouts extending radially inward from its outer rimand inside radial bar cut. outs extending radially outward from itsinner rim, each in line with an outside ,bar 'cuti'out, there being a bar holding portion between the cut outs; with'a plurality of substantially straight bars each positioned in aligned outside disk cut outs and extending outward beyond theoutside rims of thedisks, each bar having a plurality of L shaped recesses forming tongues extending from itsinside edge, each tongue extending through an insidecut out in a idisk'withthe disk bar holding portion entering a bar tongue recess and engaging a tongue, each bar having a filling holding recesspositioned in its side between adjoining disks and there being two, or more; holdingbarsthe inside edges of ,which extend radially.inwardbeyond the inside 5", edges of the. other bars tolenter slots in a Jordan plug; and hardened plasticfilling positioned in the. pockets formed by adjacent bars and disks, the hardenedv plastic filling. entering the side fill- 'ing holding recesses vinthe bars. 10:1 Thecombination in a bodily transportable hollow truncated conical lining fora Jordan en- 'gine: plug; of. a plurality of annulardisks of dif- -ferent diameters, each positioned in a plane per- 'pendicular to the axis of the lining, each disk having a plurality of outsideradial barvcut outs l extending radially inward from its outer rim and insideu'adial. b ar. cut routs. extending radially outward,from its inner rimieach in.line with an ';outside bar cutout, there beinga barholding GO; portion between the cut outs; with aplurality of substantially straight barsleachlpositioned with a close fitinalignedoutside disk cut outs and exen r1 ng outward, each bar. having a plurality of L-shaped recesses, forming. tongues extending jqfrorn its. i nside edge, ,each tongue extending ,through; an inside; cut outina disk With the disk bar. holding portion entering'a bar tongue'reccss andengagingthetep and bottom faces -thereof Withadrive fit. c 10 11..,fIhe combination in a bodily transportable hollow, truncated ,conical lining for a- J ordan eni gine plug; of ,a plurality ofannular disks of differentdiameters, each positioned in a plane perpendicular to the axis of the-lining, a cross section of,;the rim of -eachdiskbeing ofra greater radial height than its circumferential width, having a plurality of outside radial bar cut outs extending radially inward from its outer rim and inside radial bar cut outs extending radially outward from its inner rim, each in line with an outside bar cut out, there being a bar holding portion between the cut outs; with a plurality of substantially straight bars each positioned with a close fit in aligned outside disk cut outs and extending outward, each bar having a plurality of L-shaped recesses forming tongues extending from its inside edge, each tongue extending through an inside out out in a disk with the disk bar holding portion entering a bar tongue recess and engaging the top and bottom faces thereof with a drive fit.

OSCAR E. LARSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 621,298 Dillon Mar, 14, 1899 858,256 Bennett June 25, 1907 1,139,796 Parker May 18, 1915 1,166,678 Hall Jan. 4, 1916 1,576,504 Bolton 1 Mar, 16, 1926 1,890,622 Peterson 1 Dec. 13, 1932 2,008,228 Riehm July 16, 1935 2,336,039 Schueler Dec. 7, 1943 FOREIGN PATENTS Number Country Date 1,844 Great Britain of 1853 

